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    <meta charset="UTF-8" />
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    <title>Document</title>
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    <!-- 多个数组求交集 -->
    <script>
      var intersection = function (nums) {
        let a = nums[0]
        for (let i of nums) a = a.filter(_ => i.includes(_))
        return a.sort((a, b) => a - b)
      }
      console.log(
        intersection([
          [3, 1, 2, 4, 5],
          [1, 2, 3, 4],
          [3, 4, 5, 6]
        ])
      )
    </script>
  </body>
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